An immunocytochemical and ultrastructural study of the larval anterior intestine of the frog Rana temporaria, with especial reference to endocrine cells

Endocrine cells of the larval intestine of Rana temporaria tadpoles have been identified by argyrophilic, immunocytochemical and electron-microscopical techniques. Scarce endocrine cells have been found in both the short non-absorptive zone immediately following the stomach, and in the rest of the a...

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Bibliographic Details
Published in:Tissue & cell 1997-10, Vol.29 (5), p.549-559
Main Authors: Bodegas, M E, Villaro, A C, Burrell, M A, Rovira, J, Valverde, E, Ortiz De Zárate, A, Sesma, P
Format: Article
Language:English
Subjects:
Animals
Anura
Cell Differentiation - physiology
Enteroendocrine Cells - chemistry
Enteroendocrine Cells - ultrastructure
Freshwater
Immunohistochemistry
Intestines - chemistry
Intestines - cytology
Larva - chemistry
Larva - ultrastructure
Rana temporaria
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Summary:Endocrine cells of the larval intestine of Rana temporaria tadpoles have been identified by argyrophilic, immunocytochemical and electron-microscopical techniques. Scarce endocrine cells have been found in both the short non-absorptive zone immediately following the stomach, and in the rest of the anterior intestine. Endocrine cells are frequently seen to extend a cytoplasmic process towards the lumen. Immunoreactivity for serotonin, somatostatin, bombesin and cholecystokinin-8 has been detected. According to the ultrastructural traits of the endocrine granules, three larval intestinal endocrine populations have been differentiated.
ISSN:0040-8166